The old way I used to heat my garage with a propane torpedo heater (and why I switched to a mini-split)
I used to drag out my old 60,000 BTU torpedo heater every winter when I was working on small wiring jobs in the shop (you know, when I just needed to keep my fingers from freezing). That thing would blast through a 20-pound propane tank in about 8 hours, which cost me around $50 a tank here in Ohio. Plus the fumes were awful, I'd have to crack the big door a few inches and still end up with a headache after a few hours. About 3 years ago I bit the bullet and put in a 12,000 BTU mini-split heat pump for about $900 installed (did the electrical myself, which saved a chunk). Now my electric bill only goes up maybe $30 a month in the dead of January, and the air is way cleaner. Has anyone else made a similar swap from portable gas heaters to something more efficient in their home shop?